CoilPad is a flexible, ultra-thin PCB coil that can be adapted for various applications, including metal detection. By pairing CoilPad with a capacitor, you can create an LC oscillator that responds to the presence of metal objects. Additionally, two CoilPad can be used as a poor transformer, enough to wirelessly transmit data or even wirelessly power an LED!
When a capacitor is placed in parallel with CoilPad, it forms an LC circuit (inductor-capacitor circuit). When driven at its resonant frequency, this circuit oscillates. If a metal object comes near, it disturbs the field, altering the circuit’s frequency. This change can be detected, allowing CoilPad to function as a simple metal detector.
To turn CoilPad into a metal detector, you need:
#define COIL_PIN 2
void setup() {
pinMode(COIL_PIN, INPUT);
Serial.begin(115200);
}
void loop() {
int freq = pulseIn(COIL_PIN, HIGH);
Serial.println(freq);
delay(100);
}
This code reads the frequency and prints it to the serial monitor, allowing you to observe frequency changes when metal is nearby.
CoilPad can also be used for wireless transfer by pairing two CoilPads tuned to the same resonant frequency.
Where L is the inductance of the CoilPad which is 30.7uH
#define COILPAD_PIN1 2
#define COILPAD_PIN2 3
void setup() {
pinMode(COILPAD_PIN1, OUTPUT);
pinMode(COILPAD_PIN2, OUTPUT);
}
void loop() {
digitalWrite(COILPAD_PIN1, HIGH);
digitalWrite(COILPAD_PIN2, LOW);
delayMicroseconds(5); // 100kHz Resonant Frequency - Adjust delay for desired resonant frequency
digitalWrite(COILPAD_PIN1, LOW);
digitalWrite(COILPAD_PIN2, HIGH);
delayMicroseconds(5);
}
When the receiver CoilPad is placed nearby, the LED should glow, demonstrating wireless transfer.
Beyond power transfer, you can also use CoilPad to transmit data by modulating the signal frequency on the transmitter side and detecting changes on the receiver side. How cool is that!
With these techniques, you can start using CoilPad to sense metal or even as a wireless antenna.
Ready to start experimenting? Grab a CoilPad today and bring motion to your next project!
CoilPad is a flexible, ultra-thin sticker coil intended to be used as a magnetic actuator. However it can also be hacked into a micro-heater for some specialized applications. actuator that can also function as a micro-heater.
By adjusting the PWM waveform, you can vary the heat generated.
When powered at a constant 5V, CoilPad can reach up to 100°C. This makes it suitable for applications requiring a compact and seamless heating element. Varying the input voltage, directly controls the output heat - so by powering the CoilPad with a Pulse width modulation (PWM) signal instead of constant power, we can also vary the heat. A higher duty cycle results in increased heat output, while a lower duty cycle maintains a lower temperature.
Several factors affect the heating performance of CoilPad:
If you are using the DriveCell library, you can easily control the CoilPad as a micro-heater with the following example:
#include <drivecell.h>
#define HEATER_PIN1 2
#define HEATER_PIN2 3
DriveCell Heater(HEATER_PIN1, HEATER_PIN2);
void setup() {
Heater.Init();
}
void loop() {
Heater.Drive(true, 100); // Maximum heat output
delay(5000);
Heater.Drive(true, 75); // Reduce heat to 75%
delay(5000);
Heater.Drive(true, 50); // Moderate heat at 50%
delay(5000);
Heater.Drive(true, 25); // Low heat at 25%
delay(5000);
}
Understanding the Functions:
direction: true (activates the heating element)power_percent: Adjusts the heat output (0 to 100%)⚠ Note: The Drive() function uses a high-speed PWM timer, making it compatible only with CodeCell and ESP32-based devices.
If you're using a standard Arduino, you can control the heat output using the following code. However, ensure that the waveform frequency is set correctly ideally ~20kHz
#define HEATER_PIN 2
void setup() {
pinMode(HEATER_PIN, OUTPUT);
}
void loop() {
analogWrite(HEATER_PIN, 255); // Maximum heat output
delay(5000);
analogWrite(HEATER_PIN, 191); // 75% Heat
delay(5000);
analogWrite(HEATER_PIN, 127); // 50% Heat
delay(5000);
analogWrite(HEATER_PIN, 63); // 25% Heat
delay(5000);
}
As we've learned by utilizing PWM control, CoilPad can be hacked into a micro-heater! Check out the DriveCell GitHub Repository for more code examples and technical documentation!
This guide explains how the CoilPad can generate vibrations, how frequency and polarity affect its movement, and how to create its drive signals.
To make CoilPad vibrate, an electric current is applied to its coil, generating a magnetic field. By reversing the polarity at a set frequency, we create a repetitive push-pull motion that causes vibrations.
The vibration frequency can be controlled within the range of 1 Hz to 25 Hz, which means CoilPad can oscillate between 1 to 25 times per second depending on the input signal. It can go to higher frequencies, but usually the magnet won't have enough time to react.
If you attach it to something, you can adjust it to match its new resonant frequency and make the whole thing shake.
A square wave signal is required to make the CoilPad vibrate. An H-Bridge driver like our DriveCell is needed reverse its polarity and switch its polarity to make it vibrate. The input signals of the square wave can be generated using simple digitalWrite() commands in Arduino:
#define VIB_PIN1 2
#define VIB_PIN2 3
void setup() {
pinMode(VIB_PIN1, OUTPUT);
pinMode(VIB_PIN2, OUTPUT);
}
void loop() {
digitalWrite(VIB_PIN1, HIGH);
digitalWrite(VIB_PIN2, LOW);
delay(100); // Adjust delay for desired vibration speed
digitalWrite(VIB_PIN1, LOW);
digitalWrite(VIB_PIN2, HIGH);
delay(100);
}
This simple code creates a square wave oscillation, making the CoilPad vibrate continuously. You can adjust the delay time to change the vibration frequency.
The code example above generates a basic square wave, which drives the coil in an abrupt on-off manner. At low frequencies, this might not be desirable. To smooth this out, we can use Pulse Width Modulation (PWM) on both outputs. This method gradually changes the magnetic field intensity, reducing mechanical stress on the CoilPad.
This function is automatically handled within our DriveCell library:
#include <drivecell.h>
#define IN1_pin1 2
#define IN1_pin2 3
#define IN2_pin1 5
#define IN2_pin2 6
DriveCell CoilPad1(IN1_pin1, IN1_pin2);
DriveCell CoilPad2(IN2_pin1, IN2_pin2);
uint16_t vibration_counter = 0;
void setup() {
CoilPad1.Init();
CoilPad2.Init();
CoilPad1.Tone();
CoilPad2.Tone();
}
void loop() {
delay(1);
vibration_counter++;
if (vibration_counter < 2000U) {
CoilPad1.Run(0, 100, 100); // Square Wave mode
CoilPad2.Run(0, 100, 100); // Square Wave mode
}
else if (vibration_counter < 8000U) {
CoilPad1.Run(1, 100, 1000); // Smooth PWM Wave mode
CoilPad2.Run(1, 100, 1000); // Smooth PWM Wave mode
} else {
vibration_counter = 0U;
}
}
Init() → Initializes DriveCell and sets up the input pins.Run(smooth, power, speed_ms) → Oscillates the CoilPad in either a square wave or a smoother PWM wave.
smooth → 1 (PWM wave) / 0 (square wave)power → Magnetic-field strength (0 to 100%)speed_ms → Vibration speed in milliseconds⚠ Note: The Run() & Drive() function uses a high-speed PWM timer, making it compatible only with CodeCell and ESP32-based devices.
With these techniques, you can start using CoilPad to vibrate. Check out the DriveCell GitHub Repository for more code examples and technical documentation!
When working on projects that require movement or actuation, traditional motors can be bulky and challenging to integrate into compact designs. This is where CoilPad stands out - an incredibly thin coil designed to bring motion to your projects without taking any additional area.
In this post, we’ll explore the CoilPad’s fundamentals, functionality, and integration into your projects.
The CoilPad is a magnetic sticker actuator - just 0.1mm thin, flexible, and designed to stick onto flat or curved surfaces with a maximum bending radius of 18mm.
By adding a magnet, you can create oscillating motion, turning it into a tiny actuator, converting electrical energy into mechanical movement. You can also hack it into the thin buzzer, micro-heater, or metal-detector!
When an electric current flows through its ultra-thin coil, it generates a magnetic field that interacts with external magnets. Depending on the current's direction, the magnet will either be attracted or repelled, creating movement.
By applying a square wave signal, the CoilPad can also vibrate, flap or oscillate continuously with adjustable speed and intensity.
The CoilPad comes with a peelable adhesive back, allowing for quick and secure installation. Here’s how to apply it:
Clean the surface before attaching the CoilPad for a firm grip.
Peel off the adhesive cover using tweezers before powering the CoilPad.
Stick it onto the surface, ensuring it stays in place during operation.
Solder the terminals to your control circuit to start actuation.
Note: Always remove the adhesive cover before powering on the CoilPad to prevent damage to the adhesive layer.
To test your CoilPad:
Connect one pin to 5V and the other to ground – this will create an initial magnetic attraction or repulsion.
Swap the connections – reversing the polarity will switch the movement.
For continuous operation, use an H-Bridge circuit to automate the polarity switching. An H-Bridge is a circuit configuration composed of four transistors arranged in an "H" shape, allowing for bidirectional control of an actuator by reversing the current flow.
Solder the CoilPad directly to our DriveCell module to keep things compact. This has a DRV8837 H-Bridge driver packed into the smallest package, designed to handle low-power DC motors and actuators.
Ready to start experimenting? Grab a CoilPad today and bring motion to your next project!
CoilPad isn’t just a flexible coil actuator – it can also generate buzzing tones, much like a piezo buzzer. By sending a high-frequency signal, CoilPad can produce audible tones and vibrations, making it useful for alert systems, interactive responses, and creative sound-based installations.
While you can use any H-Bridge driver to control CoilPad, DriveCell makes the setup compact and easy to integrate into microcontroller projects.
CoilPad uses a thin copper coil and an N52 neodymium magnet, creating motion when an electrical current flows through it. By rapidly switching the current direction at an audible frequency range (~100Hz–10kHz), CoilPad can emit tones similar to a speaker or piezo buzzer.
By varying the frequency, you can:
To generate tones, you’ll need an H-Bridge motor driver (like DriveCell) that can rapidly switch the current direction. Using DriveCell can simplifies connections and makes the setup more compact, but any standard H-Bridge module can also be used.
Here’s how to wire CoilPad to a DriveCell module:
CoilPad can generate tones using PWM signals. Below is an example using DriveCell’s built-in functions for tone generation.
This example makes CoilPad buzz like a speaker, playing a sequence of tones:
#include <DriveCell.h>
#define IN1_pin1 2
#define IN1_pin2 3
DriveCell myCoilPad(IN1_pin1, IN1_pin2);
void setup() {
myCoilPad.Init(); /* Initialize FlatFlap with DriveCell */
myCoilPad.Tone(); /* Play a fixed tone with varying frequencies */
delay(500);
}
void loop() {
myCoilPad.Buzz(100); /* Buzz at 100 microseconds */
}
Understanding the Functions:
Buzz(duration) → Generates a buzzing effect at 100 microseconds, controlling the vibration speed.Tone() → Plays an audible tone, varying its frequency automatically.Tip: By adjusting the frequency and duty cycle, you can create different musical notes, alarms, or feedback sounds.
Below is another code example that plays the Super Mario song using CoilPad:
/* Arduino Mario Bros Tunes With Piezo Buzzer and PWM
by : ARDUTECH
Connect the positive side of the Buzzer to pin 3,
then the negative side to a 1k ohm resistor. Connect
the other side of the 1 k ohm resistor to
ground(GND) pin on the Arduino.
*/
#define NOTE_B0 31
#define NOTE_C1 33
#define NOTE_CS1 35
#define NOTE_D1 37
#define NOTE_DS1 39
#define NOTE_E1 41
#define NOTE_F1 44
#define NOTE_FS1 46
#define NOTE_G1 49
#define NOTE_GS1 52
#define NOTE_A1 55
#define NOTE_AS1 58
#define NOTE_B1 62
#define NOTE_C2 65
#define NOTE_CS2 69
#define NOTE_D2 73
#define NOTE_DS2 78
#define NOTE_E2 82
#define NOTE_F2 87
#define NOTE_FS2 93
#define NOTE_G2 98
#define NOTE_GS2 104
#define NOTE_A2 110
#define NOTE_AS2 117
#define NOTE_B2 123
#define NOTE_C3 131
#define NOTE_CS3 139
#define NOTE_D3 147
#define NOTE_DS3 156
#define NOTE_E3 165
#define NOTE_F3 175
#define NOTE_FS3 185
#define NOTE_G3 196
#define NOTE_GS3 208
#define NOTE_A3 220
#define NOTE_AS3 233
#define NOTE_B3 247
#define NOTE_C4 262
#define NOTE_CS4 277
#define NOTE_D4 294
#define NOTE_DS4 311
#define NOTE_E4 330
#define NOTE_F4 349
#define NOTE_FS4 370
#define NOTE_G4 392
#define NOTE_GS4 415
#define NOTE_A4 440
#define NOTE_AS4 466
#define NOTE_B4 494
#define NOTE_C5 523
#define NOTE_CS5 554
#define NOTE_D5 587
#define NOTE_DS5 622
#define NOTE_E5 659
#define NOTE_F5 698
#define NOTE_FS5 740
#define NOTE_G5 784
#define NOTE_GS5 831
#define NOTE_A5 880
#define NOTE_AS5 932
#define NOTE_B5 988
#define NOTE_C6 1047
#define NOTE_CS6 1109
#define NOTE_D6 1175
#define NOTE_DS6 1245
#define NOTE_E6 1319
#define NOTE_F6 1397
#define NOTE_FS6 1480
#define NOTE_G6 1568
#define NOTE_GS6 1661
#define NOTE_A6 1760
#define NOTE_AS6 1865
#define NOTE_B6 1976
#define NOTE_C7 2093
#define NOTE_CS7 2217
#define NOTE_D7 2349
#define NOTE_DS7 2489
#define NOTE_E7 2637
#define NOTE_F7 2794
#define NOTE_FS7 2960
#define NOTE_G7 3136
#define NOTE_GS7 3322
#define NOTE_A7 3520
#define NOTE_AS7 3729
#define NOTE_B7 3951
#define NOTE_C8 4186
#define NOTE_CS8 4435
#define NOTE_D8 4699
#define NOTE_DS8 4978
#define melodyPin 5
//Mario main theme melody
int melody[] = {
NOTE_E7, NOTE_E7, 0, NOTE_E7,
0, NOTE_C7, NOTE_E7, 0,
NOTE_G7, 0, 0, 0,
NOTE_G6, 0, 0, 0,
NOTE_C7, 0, 0, NOTE_G6,
0, 0, NOTE_E6, 0,
0, NOTE_A6, 0, NOTE_B6,
0, NOTE_AS6, NOTE_A6, 0,
NOTE_G6, NOTE_E7, NOTE_G7,
NOTE_A7, 0, NOTE_F7, NOTE_G7,
0, NOTE_E7, 0, NOTE_C7,
NOTE_D7, NOTE_B6, 0, 0,
NOTE_C7, 0, 0, NOTE_G6,
0, 0, NOTE_E6, 0,
0, NOTE_A6, 0, NOTE_B6,
0, NOTE_AS6, NOTE_A6, 0,
NOTE_G6, NOTE_E7, NOTE_G7,
NOTE_A7, 0, NOTE_F7, NOTE_G7,
0, NOTE_E7, 0, NOTE_C7,
NOTE_D7, NOTE_B6, 0, 0
};
//Mario main them tempo
int tempo[] = {
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
9, 9, 9,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
9, 9, 9,
12, 12, 12, 12,
12, 12, 12, 12,
12, 12, 12, 12,
};
//Underworld melody
int underworld_melody[] = {
NOTE_C4, NOTE_C5, NOTE_A3, NOTE_A4,
NOTE_AS3, NOTE_AS4, 0,
0,
NOTE_C4, NOTE_C5, NOTE_A3, NOTE_A4,
NOTE_AS3, NOTE_AS4, 0,
0,
NOTE_F3, NOTE_F4, NOTE_D3, NOTE_D4,
NOTE_DS3, NOTE_DS4, 0,
0,
NOTE_F3, NOTE_F4, NOTE_D3, NOTE_D4,
NOTE_DS3, NOTE_DS4, 0,
0, NOTE_DS4, NOTE_CS4, NOTE_D4,
NOTE_CS4, NOTE_DS4,
NOTE_DS4, NOTE_GS3,
NOTE_G3, NOTE_CS4,
NOTE_C4, NOTE_FS4, NOTE_F4, NOTE_E3, NOTE_AS4, NOTE_A4,
NOTE_GS4, NOTE_DS4, NOTE_B3,
NOTE_AS3, NOTE_A3, NOTE_GS3,
0, 0, 0
};
//Underwolrd tempo
int underworld_tempo[] = {
12, 12, 12, 12,
12, 12, 6,
3,
12, 12, 12, 12,
12, 12, 6,
3,
12, 12, 12, 12,
12, 12, 6,
3,
12, 12, 12, 12,
12, 12, 6,
6, 18, 18, 18,
6, 6,
6, 6,
6, 6,
18, 18, 18, 18, 18, 18,
10, 10, 10,
10, 10, 10,
3, 3, 3
};
void setup(void)
{
pinMode(5, OUTPUT);//buzzer
pinMode(6, OUTPUT);
digitalWrite(6, LOW);
}
void loop()
{
//sing the tunes
sing(1);
sing(1);
sing(2);
}
int song = 0;
void sing(int s) {
// iterate over the notes of the melody:
song = s;
if (song == 2) {
Serial.println(" 'Underworld Theme'");
int size = sizeof(underworld_melody) / sizeof(int);
for (int thisNote = 0; thisNote < size; thisNote++) {
// to calculate the note duration, take one second
// divided by the note type.
//e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
int noteDuration = 1000 / underworld_tempo[thisNote];
buzz(melodyPin, underworld_melody[thisNote], noteDuration);
// to distinguish the notes, set a minimum time between them.
// the note's duration + 30% seems to work well:
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
// stop the tone playing:
buzz(melodyPin, 0, noteDuration);
}
} else {
Serial.println(" 'Mario Theme'");
int size = sizeof(melody) / sizeof(int);
for (int thisNote = 0; thisNote < size; thisNote++) {
// to calculate the note duration, take one second
// divided by the note type.
//e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.
int noteDuration = 1000 / tempo[thisNote];
buzz(melodyPin, melody[thisNote], noteDuration);
// to distinguish the notes, set a minimum time between them.
// the note's duration + 30% seems to work well:
int pauseBetweenNotes = noteDuration * 1.30;
delay(pauseBetweenNotes);
// stop the tone playing:
buzz(melodyPin, 0, noteDuration);
}
}
}
void buzz(int targetPin, long frequency, long length) {
long delayValue = 1000000 / frequency / 2; // calculate the delay value between transitions
//// 1 second's worth of microseconds, divided by the frequency, then split in half since
//// there are two phases to each cycle
long numCycles = frequency * length / 1000; // calculate the number of cycles for proper timing
//// multiply frequency, which is really cycles per second, by the number of seconds to
//// get the total number of cycles to produce
for (long i = 0; i < numCycles; i++) { // for the calculated length of time...
digitalWrite(targetPin, HIGH); // write the buzzer pin high to push out the diaphram
delayMicroseconds(delayValue); // wait for the calculated delay value
digitalWrite(targetPin, LOW); // write the buzzer pin low to pull back the diaphram
delayMicroseconds(delayValue); // wait again or the calculated delay value
}
}
As we've seen, CoilPad can also produce buzzing tones when controlled with an H-Bridge module like DriveCell. Check out the DriveCell GitHub Repository for more code examples and technical documentation!
Das CoilPad ist ein unglaublich dünner und innovativer Aktuator, der in einem kompakten Formfaktor Bewegung in Ihre Projekte bringt. Um zu verstehen, wie es funktioniert, tauchen wir in sein einzigartiges Design und die Prinzipien hinter seiner Funktionsweise ein.
In diesem Tutorial erklären wir:
Was ist ein CoilPad?
Das CoilPad ist ein Aktuator aus einer flexiblen Planarspule, die nahtlos an jeder glatten Oberfläche haftet. Durch Hinzufügen eines Magneten verwandelt es sich in ein Gerät, das magnetische Bewegungen, Summen oder sogar Heizen ermöglicht. Es ist so konzipiert, dass es elektrische Energie mühelos in mechanische Bewegung umwandelt.
Wie funktioniert es?
Das CoilPad verfügt über eine flache, ultradünne Spule, die mit externen Magneten interagiert. Wenn ein elektrischer Strom durch die Spule fließt, erzeugt sie ein Magnetfeld, das den Magneten entweder anzieht oder abstößt und so eine Bewegung verursacht. Durch Ändern der Stromrichtung können Sie die Bewegung des CoilPads steuern. Durch Anlegen eines Rechtecksignals schwingt das CoilPad kontinuierlich mit einstellbarer Geschwindigkeit und Intensität. Für sanfte, organische Bewegungen werden wir die DriveCell PWM-Bibliothek erkunden.
CoilPad installieren
Das CoilPad -Design erleichtert die Installation. Es verfügt über eine abziehbare Kleberückseite, die sicherstellt, dass es fest auf jeder glatten Oberfläche haftet.
Bringen Sie Ihr CoilPad in Bewegung
Sie können mit dem Testen beginnen, indem Sie einen seiner Pins auf 5 V und den anderen auf Masse ziehen und sie dann umschalten. In einem Fall wird der Magnet abgestoßen, im anderen angezogen. Sie können es an Ihre eigenen Transistoren oder Ihr H-Brückenmodul anschließen, um diese Pins automatisch umzuschalten. Um es noch einfacher zu machen, können Sie unser kleines DriveCell- Modul kaufen. DriveCell ist ein kompakter, Pin-zu-Pin-kompatibler H-Brückentreiber, der die Steuerung von Aktuatoren wie dem CoilPad vereinfacht. Seine Open-Source-Arduino-Softwarebibliothek macht die Aktuatorsteuerung besonders für Anfänger einfach, indem sie unkomplizierte Softwarefunktionen und leicht verständliche Beispiele bietet.
Eine ausführliche Anleitung zur DriveCell- Softwarebibliothek finden Sie in diesem Artikel . Hier ist jedoch eine kurze Zusammenfassung, wie Sie deren Funktionen nutzen können, um die CoilPad -Betätigung zu verbessern. Keine Sorge, es ist ganz einfach! Laden Sie zunächst die Bibliothek „DriveCell“ aus dem Bibliotheksmanager von Arduino herunter. Nach der Installation können Sie Ihr Gerät steuern. Bevor wir beginnen, stellen Sie sicher, dass Sie die DriveCell an Ihren Mikrocontroller anschließen. Wir empfehlen die Verwendung einer CodeCell, die Pin-zu-Pin-kompatibel ist, alle Bibliotheksfunktionen unterstützt und Ihrem CoilPad drahtlose Steuerung und interaktive Sensorik hinzufügen kann.
1. Init()
Zunächst benötigen wir einen grundlegenden Setup-Code, damit Sie loslegen können:
#include <DriveCell.h> // This line includes the DriveCell library
DriveCell myCoilPad(IN1, IN2); // Replace IN1 and IN2 with your specific pins
void setup() {
myCoilPad.Init(); // Initializes your DriveCell connected to a CoilPad
}
Dieser Code gibt Ihrer DriveCell den Namen „myCoilPad“ und weist sie an, alle erforderlichen Peripheriegeräte zu starten und zu initialisieren.
2. Puls (bool Richtung, uint8_t ms_Dauer)
Diese Funktion sendet einen kurzen Stromstoß mit einer bestimmten Polarität an das CoilPad . Dieses schnelle Aktivieren und Deaktivieren kann je nach Polarität eine kurze, heftige Bewegung des CoilPads verursachen.
myCoilPad.Pulse(1, 10); // Sends a short burst for 10 milliseconds in the specified direction3. Buzz (uint16_t us_buzz)
Diese Funktion lässt das CoilPad wie einen Summer vibrieren, was zur Erzeugung einer akustischen Rückmeldung nützlich ist.
myCoilPad.Buzz(100); // Makes the CoilPad buzz with a 100 microsecond pulses
4. Ton()
Mit der Tone -Funktion kann das CoilPad einen Ton abspielen. Dies kann für akustisches Feedback oder kreative Anwendungen verwendet werden, bei denen Ton Teil der Interaktion ist.
myCoilPad.Tone(); // Plays a tone by varying the frequency
5. Umschalten (uint8_t power_percent)
Diese Funktion schaltet die CoilPad- Polarität um, was nützlich sein kann, um in Ihrem Code eine schnelle Schlagbewegung zu erzeugen oder die Richtung schnell umzukehren.
myCoilPad.Toggle(100); // Toggles direction at 100% power
6. Ausführen (bool glatt, uint8_t Leistungsprozentsatz, uint16_t Flip-Geschwindigkeit_ms)
Mit dieser Funktion können Sie die Polarität des CoilPads kontinuierlich umkehren und seine Bewegungsgeschwindigkeit und -glätte steuern. Wenn smooth auf true eingestellt ist, ist die Betätigung weniger scharf und sanfter, was ideal für langsamere, kontrollierte Bewegungen ist.
myCoilPad.Run(true, 50, 1000); // Runs the CoilPad smoothly at 50% power, flipping every 1000 milliseconds
7. Antrieb (bool Richtung, uint8_t Leistung_Prozent)
Mit dieser Funktion können Sie die Polarität des CoilPads und seine magnetische Feldstärke durch Anpassen des Leistungspegels steuern.
myCoilPad.Drive(true, 75); // Moves the CoilPad forward at 75% power
Hier ist ein Beispiel, bei dem wir zwei CoilPads konfigurieren und sie mit zwei verschiedenen Geschwindigkeiten betätigen:
#include <DriveCell.h>
#define IN1_pin1 2
#define IN1_pin2 3
#define IN2_pin1 5
#define IN2_pin2 6
DriveCell CoilPad1(IN1_pin1, IN1_pin2);
DriveCell CoilPad2(IN2_pin1, IN2_pin2);
uint16_t c_counter = 0;
void setup() {
CoilPad1.Init();
CoilPad2.Init();
CoilPad1.Tone();
CoilPad2.Tone();
}
void loop() {
delay(1);
c_counter++;
if (c_counter < 2000U) {
CoilPad1.Run(0, 100, 100);
CoilPad2.Run(0, 100, 100);
}
else if (c_counter < 8000U) {
CoilPad1.Run(1, 100, 1000);
CoilPad2.Run(1, 100, 1000);
} anders {
c_Zähler = 0U;
}
}
Kombination mit CodeCell-Sensoren
Um es noch interaktiver zu machen, können Sie CoilPad und DriveCell mit dem winzigen CodeCell-Sensormodul kombinieren. CodeCell ist Pin-zu-Pin-kompatibel mit DriveCell , unterstützt alle Bibliotheksfunktionen und kann Ihrem Projekt drahtlose Steuerung und interaktive Sensorik hinzufügen. Auf diese Weise können Sie mit Ihren CoilPad- Aktuatoren fortgeschrittenere, reaktionsfähigere Elemente erstellen.
Mit diesem nächsten Beispiel steuert die CodeCell zwei CoilPads , die aufhören zu flattern, wenn eine Annäherung erkannt wird. Ihr Magnetfeld wird dynamisch angepasst, je nachdem, wie nahe Ihre Hände kommen. Wenn keine Hand erkannt wird, wechselt die CoilPad- Polarität alle 400 Millisekunden.
#include <CodeCell.h>
#include <DriveCell.h>
#define IN1_pin1 2
#define IN1_pin2 3
#define IN2_pin1 5
#define IN2_pin2 6
DriveCell CoilPad1(IN1_pin1, IN1_pin2);
DriveCell CoilPad2(IN2_pin1, IN2_pin2);
CodeCell myCodeCell;
void setup() {
Serial.begin(115200);
/* Set Serial baud rate to 115200. Ensure Tools/USB_CDC_On_Boot is enabled if using Serial. */
myCodeCell.Init(LIGHT); /*Initialisiere die Lichterkennung*/
CoilPad1.Init();
CoilPad2.Init();
CoilPad1.Tone();
CoilPad2.Tone();
}
void schleife() {
wenn (myCodeCell.Run()) {
/*Läuft alle 100 ms*/
uint16_t Nähe = myCodeCell.Light_ProximityRead();
Serial.println(Nähe);
wenn (Nähe < 100) {
CoilPad1.Run(1, 100, 400);
CoilPad2.Run(1, 100, 400);
} anders {
Nähe = Nähe - 100;
Nähe = Nähe / 10;
wenn (Nähe > 100) {
Nähe = 100;
}
CoilPad1.Drive(0, (Nähe));
CoilPad2.Drive(0, (Nähe));
}
}
}
Passen Sie den Code gerne Ihren eigenen kreativen Ideen an oder fügen Sie Bewegungssensoren für eine neue Reaktion hinzu! Beginnen Sie noch heute mit unseren Arduino-Bibliotheken! Wenn Sie weitere Fragen zum CoilPad haben, schreiben Sie uns einfach eine E-Mail und wir helfen Ihnen gerne weiter!